Add RHEL8 to test farm targets

* Add RHEL 8 to targets

* Use latest certbot-auto to bootstrap.

* Workaround leauto failures.

tests/letstest/scripts/test_leauto_upgrades.sh

@@ -26,6 +26,17 @@ else
     # 0.33.x is the oldest version of letsencrypt-auto that works on Fedora 29+.
     INITIAL_VERSION="0.33.1"
 fi
+
+# If we're on RHEL 8, the initial version of certbot-auto will fail until we do
+# a release including https://github.com/certbot/certbot/pull/7240 and update
+# INITIAL_VERSION above to use a version containing this fix. This works around
+# the problem for now so we can successfully run tests on RHEL 8.
+RPM_DIST_NAME=`(. /etc/os-release 2> /dev/null && echo $ID) || echo "unknown"`
+RPM_DIST_VERSION=`(. /etc/os-release 2> /dev/null && echo $VERSION_ID) | cut -d '.' -f1 || echo "0"`
+if [ "$RPM_DIST_NAME" = "rhel" -a "$RPM_DIST_VERSION" -ge 8 ]; then
+    sudo yum install python3-virtualenv -y
+fi
+
 git checkout -f "v$INITIAL_VERSION" letsencrypt-auto
 if ! ./letsencrypt-auto -v --debug --version --no-self-upgrade 2>&1 | tail -n1 | grep "^certbot $INITIAL_VERSION$" ; then
     echo initial installation appeared to fail

tests/letstest/scripts/test_sdists.sh

@@ -1,7 +1,7 @@
 #!/bin/sh -xe
 
 cd letsencrypt
-./certbot-auto --install-only -n --debug
+letsencrypt-auto-source/letsencrypt-auto --install-only -n --debug
 
 PLUGINS="certbot-apache certbot-nginx"
 PYTHON_MAJOR_VERSION=$(/opt/eff.org/certbot/venv/bin/python --version 2>&1 | cut -d" " -f 2 | cut -d. -f1)

tests/letstest/targets.yaml

@@ -45,6 +45,11 @@ targets:
     type: centos
     virt: hvm
     user: ec2-user
+  - ami: ami-0c322300a1dd5dc79
+    name: RHEL8
+    type: centos
+    virt: hvm
+    user: ec2-user
   - ami: ami-00bbc6858140f19ed
     name: fedora30
     type: centos